Color

#515bec

#515bec
hex#515bec
rgbrgb(81, 91, 236)
hslhsl(236, 80%, 62%)
oklchoklch(0.551 0.215 273.9)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1529

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ece151

#51a8ec · #9451ec

#ec515b · #5bec51

Split-complementary

Open in tool →

#ec9451 · #a8ec51

#ec51a8 · #ece151 · #51ec94

Contrast

#515bec as textRatioAAAA largeAAAFix
Aaon white
5.18:1passpassfail
  • AAA: use #303de8 as the text (7.1:1)
Aaon black
4.06:1failpassfail
  • AA: use #5e68ed as the text (4.68:1)
  • AAA: use #888ff2 as the text (7.26:1)
  • AA: or shift the background to #f0f0f0 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515bec as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#515bec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #515bec
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #515bec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515bec-9e9cc4-df8f4e-241f2d-e9eef1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md